Portion of a shoe sole



FIG. 1 is a front perspective view of an embodiment of a portion of a shoe sole showing a new design;

FIG. 2 is a rear perspective view of the portion of a shoe sole of FIG. 1; and,

FIG. 3 is a side plan view the portion of a shoe sole of FIG. 1.

Please note that the Figures include broken, solid and dash-dot-dash lines. The area within the solid and dash-dot-dash lines forms the claimed design. The area within the broken lines is environmental. Color, contrast and texture form no part of the claimed design in any of the Figures. 

The ornamental design for a portion of a shoe sole, as shown and described. 